“Harsh words live in the dungeon of the heart”

“Fearless people,
Careless needle.
Harsh words spoken,
And lives are broken.”

“And virtue they will curse, speaking harsh words.”

“What other dungeon is so dark as one's own heart! What jailer so inexorable as one's self!”

“As harsh as Love-Kiss might sound in your ears it will resonate more swetly to your heart.”

“Harsh words, though pertinent, uncouth appear:
None please the fancy, who offend the ear.”

“No matter how angry, never use harsh words on others; for those could be the last words you'll ever say to them. Choose to be kind always.”

“People are able to live with only half a heart, to live without real compassion, because they are able to use words that are only forms.”

“Simon grinned. "You've never heard of Dungeons and Dragons?"
"I've heard of dungeons," Jace said. "Also dragons. Although they're mostly extinct.”

“Lovely. Imprisoned in a nursery school dungeon.”